

“We can't wait for the next project!”
“My kids, nieces and nephews hardly ever interact with each other but building CircuitMess project brought the whole family closer. It was the most rewarding experience I've ever had with these wonderful kids.”
CircuitMess kits empower kids to explore the world of electronics, coding, and robotics through fun, hands-on projects. They'll build real working devices, like retro game consoles and practical robots, while developing valuable skills and creating something new.
Includes retro console Bit, all 15 Wacky Robots, and 20+ unique games
Create a robot that lights up and unlock a new game for your Bit
Build & control your own robot spider, plus unlock a unique Bit game
Build a car that reacts to lights and unlock a unique Bit game
Explore vibration motors, build a robot bee, and unlock a new Bit game
Robby teaches sensors & electronics, plus unlocks a game for your Bit
Build your own Bluetooth speaker and unlock a new Bit game
Explore electronics & create sound, plus unlock a unique game for Bit
Build circuits, learn about LEDs, and unlock a unique Bit game
Learn about capacitors & LEDs, and unlock a unique game for Bit
Hertz teaches sound & oscillation, and unlocks a unique Bit game
Build your own robot & learn about photoresistors, plus get a Bit game
Build Marv, learn pushbuttons & counters, plus unlock a new Bit game
Learn about decade counters & potentiometers, plus get a Bit game
Build a robot van & learn about voltage regulators, plus get a Bit game
Upgrade your workspace with our heat-resistant mat (9.45' x 8.27')
Get that scientist look & stay safe while working with electronics
Beep Boops are here! Get yours before they sell out!
For orders over $96
Reach out if you need help with your build
Designed & produced in EU by tech experts
100% safe - PayPal, debit, or credit card
Over 100.000 STEM kits sold
Join a thriving community of young makers and curious minds who are learning with STEM kits, exploring real-world skills, and building exciting tech projects. Discover why parents consider CircuitMess among the best STEM toys for kids and what they have to say about their experience:
“We can't wait for the next project!”
“My kids, nieces and nephews hardly ever interact with each other but building CircuitMess project brought the whole family closer. It was the most rewarding experience I've ever had with these wonderful kids.”
“A fun way to set kids up for future success”
“I got the Wacky Robots kit for my kids, and I couldn’t be happier with the results. They’re having so much fun building and experimenting, but what really amazes me is how much they’re learning. These kits are teaching them real life skills, things that will help them in school and, down the line, help them in their careers.”
“Brilliant STEM kits for kids”
“We have recently bought the CircuitMess Bit along with 9 different mini robots to replace another known STEM brand. The difference is night and day. CircuitMess provides fun projects for kids to actually enjoy.”
“A fun way to set kids up for future success”
“I wasn’t expecting much more than a fun activity when I got this for my kids, but it turned out to be so much more. They’re not just playing - these kits are educating them and building a foundation for something bigger.This is more than just a toy; it’s an investment in their future.”
“Best gift I Ever Gave to My Family”
“The Wacky Robots set was the perfect gift for my brother-in-law's family. Everyone was delighted. With clear instructions and unique details, it provided an engaging and educational activity for all of us to enjoy together.”
STEM toys are educational toys designed to teach concepts from Science, Technology, Engineering, and Mathematics in a fun, hands-on way.They help kids learn by turning abstract ideas into tangible experiences. Instead of just reading about a concept, a child gets to build, create, or interact with it. This active learning process helps develop crucial skills like problem-solving, creativity, and critical thinking. For example, a CircuitMess toy like Bit isn't just a game console; it's a playful introduction to cause-and-effect and basic robotics, teaching valuable lessons through interactive play.
The best STEM kits for kids are those that spark curiosity and match a child’s interests without causing frustration. They should be engaging, age-appropriate, and provide a fun sense of accomplishment. Great kits often focus on a specific passion, like music, gaming, or robotics. For younger children, ready-to-play options are fantastic. For instance, CircuitMess created Beep Boop, a collectible digital pet, which introduces kids to robotics and character interaction right out of the box, making it one of the best choices for a first STEM toy.
While some complex building kits with many small parts are better for older kids and teens, many STEM kits are designed specifically for young children. The key is to look for kits with larger, easier-to-handle components or ready-to-play experiences that introduce STEM concepts without requiring intricate assembly. CircuitMess understands this distinction, offering advanced building kits for teens, but also creating products like Beep Boop which require no building, making the fun of interactive technology accessible and safe for kids as young as four.
To choose the right STEM toy, start with your child’s passions. If they love animals and collectibles, a robot like CircuitMess Hertz is a perfect fit. If they are obsessed with video games, a DIY console would be more engaging. Consider their age and patience level; younger children often do best with ready-to-play toys that offer immediate interaction, while older kids might enjoy the challenge of a building kit. The right STEM toy feels less like a lesson and more like an exciting new way to explore their favorite things.
We have two product lines. One is for kids, and it includes STEM toys for ages 7+. The other product is for teens & adults. It consists of products for ages 11+, 14+, as well as more advanced kits for adults.
You will learn all the essential STEM skills that could define your future. You'll learn everything from electronics and robotics to coding and problem-solving.
We ship worldwide - you can get a kit no matter where you are in the world. You get a free tracked shipping for orders over $99. For orders below $99 shipping fee starts at $15. Your packages will be shipped from the EU, and if you have any questions about import charges, please check this. Within EU, You get a free tracked shipping for orders over $99. For orders below $99 shipping fee starts at $8.
You can access anatomy, build, coding, and usage guides on our learning platform, CircuitMess Resources, under the Guides section. All our projects are open-source, and additional product details are available on our GitHub repository. If you still can't find the answer you're looking for, you can always reach out to us at contact@circuitmess.com, and we'll be happy to help!
Yes, CircuitMess products designed for young kids are made with safety as a top priority. For example, Beep Boop is a ready-to-play toy that requires no building, soldering, or handling of small electronic components, making it perfectly safe for children aged 4 and up. The materials are durable and designed to withstand play. For the more advanced building kits intended for older kids and teens, all components meet rigorous safety standards, and the included guides provide clear instructions for safe assembly.